Dude, is it feasible to use Q235B material for the load-bearing I-beams? ? ?
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It’s a small set of devices. Initially, the manager said that the I-beams used for load-bearing purposes, with sizes 25 and 32, should be made of Q355B material; but when I placed the purchase order, I forgot to specify the material. It’s not known at the moment whether the material purchased is Q235B or Q355B. If it is really Q235B, is its strength sufficient?
I-beams made of Q235B material may not have sufficient strength as load-bearing beams, whereas Q355B has higher strength. Whether it is usable or not depends on the load-bearing requirements of the device and the specifications of the I-beam. It is recommended to check the material used in procurement and calculate the load-bearing capacity to ensure safety. .
It can be used, but it depends on the load and specifications; this is determined by the structural engineering team.
It depends on the specific structural stress calculation results. The stress level in a normal structure should not be very high; the limiting factor is often the amount of deformation. If the material is not specified, it is definitely Q235; reinforcement can be achieved by adding diagonal bracing
I checked the acceptance certificate; it specifies 20# steel, which should have slightly better strength than 235. As for the load, a 6300L finished-product tank storing one batch of products weighs around 9-10 tons; that’s what’s a concern. A rectangle enclosed by 4 pillars has a length of 6 meters and a width of 5 meters. The other ones are all small kettles, so there’s no need to worry about them.
There are diagonal braces: one column is used to connect the main beam with 2–3 pieces of 12# channel steel as diagonal braces, and the 32c main beam is also reinforced by welding small steel plates to it.
It depends on the allowable stress; the two are almost the same
A diagonal brace can be added to the 32C main beam, while the 25b secondary beam should be connected to the main beams on both sides. In the end, it still relies on calculations
The installation was carried out in this way, and the supervisor said it’s not a big problem:D; a margin was left during the design, so this deviation is within acceptable limits.